Accession Number : ADA186367

Title :   Investigation of the Phase Equilibrium of Alloys of the Ternary System Ti-Al-Nb,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH

Personal Author(s) : Nartova, T T ; Sopochkin, G G

PDF Url : ADA186367

Report Date : 09 Sep 1987

Pagination or Media Count : 13

Abstract : We limited our investigation of the constitution diagram of the ternary system Titanium Aluminum Niobium to the specific system Ti-Ti3A1-Nb in order to establish the regions of the alpha and beta solid solutions of titanium, the solid solutions based on aluminide Ti3A1 and the phases conjugated with them. The constitution diagram of the systems Ti-A1 and Ti-Nb obtained from the data were used as the basis for constructing the constitution diagram of the ternary system. The methods of microstructural, thermal and X ray phase analysis were used in the study. The X ray pictures were taken in copper emission from powders that had been preliminarily annealed in a vacuum at 600 for 30 min. Iodic titanium, aluminum brand AV-000 and fillet niobium were used as the source materials. The alloys were remelted five times in an electric arc furnace with a nonconsumable tungsten electrode in an argon atmosphere, and then by crucibleless melting in the suspended state. The constancy of the chemical composition of the alloys was monitored by their weight after smelting in an electric arc furnace.

Descriptors :   *ALUMINUM, *EQUILIBRIUM(GENERAL), *TERNARY COMPOUNDS, *TITANIUM ALLOYS, *PHASE STUDIES, *NIOBIUM, ARGON, CHEMICAL COMPOSITION, COPPER, ELECTRIC ARCS, ELECTRIC FURNACES, EMISSION, PICTURES, POWDERS, SMELTING, SOLID SOLUTIONS, X RAYS, TITANIUM, MICROSTRUCTURE, POWDER METALLURGY, THERMAL ANALYSIS, TRANSLATIONS, USSR, RUSSIAN LANGUAGE

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE